半球内白物质不对称性和半球间连接是左撇子语言生产和空间注意力的侧面化背后的基础
Miaomiao Zhu1,2, Xiao Wang1, Xier Zhao1
1Key Laboratory of Brain Functional Genomics (MOE & STCSM), Shanghai Changning-ECNU Mental Health Center, School of Psychology and Cognitive Science, East China Normal University, Shanghai, China.
Neurobiology of language (Cambridge, Mass.)
|January 20, 2025
概括
大脑白质的连接性影响语言和空间注意力的横向化. 语言依赖于半球内部和半球间的连接,而空间注意力主要使用半球间的途径.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
背景情况:
- 功能横向化,如向左的语言产生和向右的空间注意力,是人类大脑组织的关键特征.
- 这些横向的精确解剖学基础,特别是白质连接的作用,仍然不完全理解.
研究的目的:
- 研究白质连接性与语言生产和空间注意力的功能横向化之间的关系.
- 区分白质内和半球间白质路径对这些认知功能的贡献.
主要方法:
- 利用一种新的基于fixel的分析框架来检查96个左撇子的纤维特异性白质性质.
- 使用单词生成任务评估语言侧面化,使用地标任务评估空间注意力侧面化.
- 根据大脑激活模式将参与者分为典型和非典型的功能主导群体.
主要成果:
- 语言占主导地位的差异与SLF-III上部纵向囊中的不对称性有关.
- 空间注意力占主导地位的差异与大脑质体的正面和正面体有关.
- 语言侧面化的程度是由SLF-III不对称性和体的面体体预测的,而空间注意力的侧面化是由体的面体预测的.
- 功能横向化和前/中间状连接之间的负相关性支持了状体功能激发模型.
结论:
- 语言侧面化似乎是由内半球 (例如,SLF-III) 和内半球 (例如,体) 白质连接的组合形成的.
- 空间注意力的横向化似乎更多地依赖于半球间的连接,特别是在体内.
关键词:
体 (corpus callosum) 是一个有机体.功能侧面化的功能侧面化.语言横向化 (lateralization) 是一种语言横向化.语言制作语言制作空间上的注意力上部纵向囊 (上部纵向囊)更多相关视频
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